NDLI: Microbial biodegradation of microcystin-RR by bacterium Sphingopyxis sp. USTB-05.

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Microbial biodegradation of microcystin-RR by bacterium Sphingopyxis sp. USTB-05.

Content Provider	Semantic Scholar
Author	Zhang, Mulan Pan, Gang
Copyright Year	2010
Abstract	A strain, USTB-05, isolated from Lake Dianchi, China, degraded the cyanobacterial toxin microcystin-RR (MC-RR) at the rate of 16.7 mg/L per day. Analysis of 16S rDNA sequence showed that the strain was Sphingopyxis sp. Enzymatic degradation pathways for MC-RR by Sphingopyxis sp. USTB-05 were identified. Adda-Arg peptide bond of MC-RR was cleaved and then a hydrogen and a hydroxyl were combined onto the NH2 group of Adda and the carboxyl group of arginine to form a linear molecule as intermediate product within the first few hours. Then, through dehydration reaction, two hydrogen of amino group on arginine reacted with adjacent hydroxyl on carbon to form a linear MC-RR with two small peptide rings as the final product after 24 hr. These biodegradation pathways were different from those reported for other strains, implying that MC-RR may undergo different transformations and different products were formed due to various bacteria in natural lakes and reservoirs.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.jesc.ac.cn/jesc_cn/ch/reader/create_pdf.aspx?file_no=2010220202
Alternate Webpage(s)	https://www.researchgate.net/profile/Gang_Pan2/publication/43180071_Microbial_biodegradation_of_microcystin-RR_by_bacterium_Sphingopyxis_sp._USTB-05/links/0fcfd50e536bd4850d000000.pdf
PubMed reference number	20397402v1
Volume Number	22
Issue Number	2
Journal	Journal of environmental sciences
Language	English
Access Restriction	Open
Subject Keyword	Arginine Biodegradation Carboxyl Group Cleaved cell Dehydration Hydroxyl Radical Mechlorethamine Reservoir Device Component Ring device cell transformation
Content Type	Text
Resource Type	Article

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